So, This is my first attempt at airbrushing and although it is not 100% complete yet some progress pics of my MOW ROTJ jetpack. I used Humbrol colors and a dual action airbrush on this. I still have a ways to go but here are my initial photos.
I think you did a great job. The masking is well done. Not easy. Are you using a magnet to hold the rocket tip in place? I'm just in the middle of painting my MOW jetpack now.